//C10:10.7:rain.c
#include <stdio.h>
#define MONTHS  12
#define YEARS   5

int main(void)
{
    const float rain[YEARS][MONTHS] = 
    {
        {4.3, 4.3, 4.3, 3.0, 2.0, 1,2, 0.2, 0.2, 0.4, 2.4, 3.5, 6.6},
        {8.5, 8.2, 1.2, 1.6, 2.4, 0.0, 5.2, 0.9, 0.3, 0.9, 1.4, 7.3},
        {9.1, 8.5, 6.7, 4.3, 2.1, 0.8, 0.2, 0.2, 1.1, 2.3, 6.1, 8.4},
        {7.2, 9.9, 8.4, 3.3, 1.2, 0.8, 4.0, 0.0, 0.6, 1.7, 4.3, 6.2},
        {7.6, 5.6, 3.8, 2,8, 3.8, 0.2, 0.0, 0.0, 0.0, 1.3, 2.6, 5.2}
    };

    int year, month;
    float subtot, total;

    printf(" YEAR   RAINFALL (inches)\n");
    for (year = 0, total = 0; year < YEARS; year++)
    {
        for (month = 0, subtot = 0; month < MONTHS; month++)
        {
            subtot += rain[year][month];
        }
        printf("%5d %15.1f\n", 2000 + year, subtot);
        total += subtot;
    }

    printf("\nThe yearly average is %.1f inches.\n\n", total / YEARS);
    printf("MONTHSLY AVERAGES: \n\n");
    printf(" Jan Feb Mar Apr May Jun Jul Aug Sep Oct ");
    printf(" Nov Dec\n");

    for (month = 0; month < MONTHS; month++)
    {
        for (year = 0, subtot = 0; year < YEARS; year++)
        {
            subtot += rain[year][month];
        }
        printf("%4.1f ", subtot / YEARS);
    }
    printf("\n");
}
